Undefined behavior detected by ubsan about brotli HOT 6 CLOSED

/home/nemequ/local/src/squash/plugins/brotli/brotli/dec/./bit_reader.h:151:8: error: cast from 'uint8_t *' (aka 'unsigned char *') to 'uint64_t *'
      (aka 'unsigned long *') increases required alignment from 1 to 8 [-Werror,-Wcast-align]
      *(uint64_t*)(dst + bytes_read) = 0;
       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/nemequ/local/src/squash/plugins/brotli/brotli/dec/./bit_reader.h:152:8: error: cast from 'uint8_t *' (aka 'unsigned char *') to 'uint64_t *'
      (aka 'unsigned long *') increases required alignment from 1 to 8 [-Werror,-Wcast-align]
      *(uint64_t*)(dst + bytes_read + 8) = 0;
       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/nemequ/local/src/squash/plugins/brotli/brotli/dec/./bit_reader.h:153:8: error: cast from 'uint8_t *' (aka 'unsigned char *') to 'uint64_t *'
      (aka 'unsigned long *') increases required alignment from 1 to 8 [-Werror,-Wcast-align]
      *(uint64_t*)(dst + bytes_read + 16) = 0;
       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/nemequ/local/src/squash/plugins/brotli/brotli/dec/./bit_reader.h:154:8: error: cast from 'uint8_t *' (aka 'unsigned char *') to 'uint64_t *'
      (aka 'unsigned long *') increases required alignment from 1 to 8 [-Werror,-Wcast-align]
      *(uint64_t*)(dst + bytes_read + 24) = 0;
       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/nemequ/local/src/squash/plugins/brotli/brotli/dec/./bit_reader.h:189:30: error: cast from 'uint8_t *' (aka 'unsigned char *') to
      'const uint32_t *' (aka 'const unsigned int *') increases required alignment from 1 to 4 [-Werror,-Wcast-align]
    br->val_ |= ((uint64_t)(*(const uint32_t*)(
                             ^~~~~~~~~~~~~~~~~~

uint32_t tmp;
memcpy(&tmp, p, sizeof(uint32_t));
// use tmp